A Novel Planar Differential Koch Fractal Eddy Current Probe with Parallel Wound Topological Structure

Figure 15

Experiment result for different direction defect detection: (a) of real part of the three kinds of probes for 5 mm defect detection; (b) of imaginary part of the three kinds of probes for 5 mm defect detection; (c) of real part of the three kinds of probes for 10 mm defect detection; (d) of imaginary part of the three kinds of probes for 10 mm defect detection.

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